Duckbill mask



1. Duckbill mask

1.1 : Perspective

1.2 : Front

1.3 : Back

1.4 : Right

1.5 : Left

1.6 : Top

1.7 : Bottom

1.8 : Perspective view in an environment of use

A portion of the front face of the mask is transparent; in Fig. 1.8 , the broken lines depict a human head that forms no part of the claim; the shading lines in the reproductions represent contours only and do not illustrate an ornamentation or decoration on the surface of the product. 

CLAIM The ornamental design for a duckbill mask, as shown and described. 